Air return device of self-suction pulverizer for veterinary drug preparation

Abstract

The utility model provides an air return device of a self-suction crusher for veterinary drug preparation, which belongs to the field of veterinary drug processing and crushing and comprises a support and a self-suction crusher mounted on the support, a mounting pipe is mounted at a suction end of the self-suction crusher, and a suction pipe is mounted on the mounting pipe; one end of the T-shaped pipe is connected with an air inlet pipe, an air inlet hole is formed in the air inlet pipe in a penetrating mode, and the other end of the T-shaped pipe is connected with the installation pipe. The first motor drives the T-shaped pipe to rotate, part of air is introduced into the air return system through the air inlet pipe and the air inlet holes, and internal airflow circulation is formed; negative pressure at the air inlet holes can clean dust on the inner wall of the exhaust bag, increase the exhaust air rate, ensure the ventilation effect, reduce the air pressure in the exhaust bag, solve the problem that the exhaust capacity of the exhaust bag is reduced due to dust adhesion, and improve the working efficiency of the self-suction crusher.

Description

Technical Field

[0001] This utility model relates to the field of veterinary drug processing and crushing technology, and in particular to a return air device for a self-priming pulverizer used in veterinary drug preparation. Background Technology

[0002] In the veterinary drug manufacturing industry, self-priming pulverizers are commonly used equipment. Their main function is to pulverize veterinary drug raw materials to meet the requirements of subsequent production processes. However, existing self-priming pulverizers have many problems in actual use, affecting the equipment's performance and production efficiency.

[0003] A self-priming pulverizer draws material from a pit through a suction pipe. The material is then crushed by high-speed rotating hammers on the pulverizer rotor and falls into the hopper. The airflow generated by the rotor's rotation carries a large amount of dust into an exhaust bag above the hopper. The airflow is then expelled into the atmosphere, while the dust falls back into the hopper. Because some particularly fine dust adheres to the inner wall of the exhaust bag, its exhaust capacity decreases, leading to increased internal air pressure, reduced suction capacity, and a sharp drop in pulverizer output. Existing technology, patent number CN206701467U, describes a return air device for a self-priming pulverizer, applicable to veterinary drug processing. While it addresses some of the aforementioned technical problems—such as reducing internal air pressure and improving efficiency—it does not substantially solve the problem of dust adhering to the inner wall of the exhaust bag, thus reducing its exhaust capacity. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a self-priming pulverizer return air device for veterinary drug preparation.

[0005] An embodiment of this utility model provides a return air device for a self-priming pulverizer used in veterinary drug preparation, comprising:

[0006] A support frame and a self-priming crusher mounted on the support frame, wherein the self-priming crusher has an installation pipe installed at its suction end, and a suction pipe is installed on the installation pipe;

[0007] A discharge pipe is installed at the discharge end of the self-priming crusher, and a discharge hopper is installed on the discharge pipe. An exhaust hood is installed at the upper end of the discharge hopper, and an exhaust bag is installed inside the exhaust hood. A first motor is installed at the upper end of the exhaust hood, and a T-shaped pipe located inside the exhaust bag is installed at the output end of the first motor. One end of the T-shaped pipe is connected to an air inlet pipe, and an air inlet hole is provided through the air inlet pipe. The other end of the T-shaped pipe is connected to an installation pipe.

[0008] Furthermore, a second motor is installed on the bracket, and a first sprocket is fixed to the output end of the second motor. A second sprocket is installed on the self-priming crusher, and the first sprocket and the second sprocket are connected by a chain.

[0009] Furthermore, an inclined return air duct is installed through the mounting pipe, and an L-shaped pipe is rotatably connected to the lower end of the T-shaped pipe. The L-shaped pipe is connected to the return air duct via a flexible hose.

[0010] Furthermore, the air intake pipe is positioned close to the exhaust bag, and the air intake pipe does not abut against the exhaust bag.

[0011] Furthermore, the suction pipe is connected to the installation pipe via a threaded connector, and the suction pipe is a flexible pipe.

[0012] Furthermore, the diameter of the return air duct is smaller than the diameter of the installation duct, and the port of the return air duct is oriented towards the self-priming pulverizer.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] This invention uses a first motor to drive the T-shaped tube to rotate, and uses the air inlet pipe and air inlet hole to introduce part of the air into the return air system to form an internal airflow circulation; the negative pressure at the air inlet hole can clean the dust on the inner wall of the exhaust bag, increase the exhaust volume, ensure the ventilation effect, reduce the air pressure inside the exhaust bag, solve the problem of the exhaust bag's exhaust capacity being reduced due to dust adhesion, and improve the working efficiency of the self-priming crusher. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of a self-priming pulverizer return air device for veterinary drug preparation as described in an embodiment of this utility model.

[0016] Figure 2 This is a rear view of the air return device of a self-priming pulverizer for veterinary drug preparation as described in an embodiment of this utility model.

[0017] Figure 3 This is a schematic diagram of the T-shaped pipe in the return air device of a self-priming pulverizer for veterinary drug preparation as described in this embodiment of the present invention.

[0018] In the above attached diagram: 1. Support frame; 2. Self-priming crusher; 3. Suction pipe; 4. Discharge pipe; 5. Discharge hopper; 6. Exhaust hood; 7. First motor; 8. Hose; 9. Second motor; 10. Second sprocket; 11. First sprocket; 12. Chain; 13. Mounting pipe; 14. Return air pipe; 15. Exhaust bag; 16. T-tube; 18. Inlet pipe; 19. Inlet hole. Detailed Implementation

[0019] The technical solution of this utility model will be further described below with reference to the accompanying drawings and embodiments.

[0020] like Figures 1-3 As shown in the figure, this utility model embodiment proposes a self-priming pulverizer return air device for veterinary drug preparation, comprising:

[0021] The support frame 1, serving as the fundamental support structure of the entire device, is welded from high-strength steel, possessing excellent load-bearing capacity and stability. Its surface undergoes rust-proofing treatment, effectively extending its service life and adapting to the complex working environment of veterinary drug preparation workshops. The bottom of the support frame 1 is equipped with height-adjustable feet, allowing for fine-tuning according to ground flatness to ensure the equipment's levelness after installation, thereby guaranteeing the normal operation of the self-priming pulverizer 2.

[0022] The second motor 9, mounted on the bracket 1, serves as the power source, providing rotational power to the self-priming crusher 2. The second motor 9 is a high-efficiency, energy-saving three-phase asynchronous motor, featuring high power, stable speed, and low noise. A first sprocket 11 is fixed to its output end, and a second sprocket 10 is mounted on the input shaft of the self-priming crusher 2. The first sprocket 11 and the second sprocket 10 are connected by a chain 12, forming a chain drive system. The chain 12 is made of high-strength alloy steel, precision-machined and heat-treated, possessing high tensile strength and wear resistance, ensuring the stability and reliability of power transmission. To reduce wear on the chain 12 during operation, it is regularly lubricated with a special chain lubricant.

[0023] The self-priming pulverizer 2 is equipped with an installation pipe 13 at its suction end. The installation pipe 13 is made of seamless steel pipe with a smooth inner wall, reducing the resistance of the material during the suction process. The suction pipe 3 is connected to the installation pipe 13 via a threaded connector. The suction pipe 3 is made of a flexible pipe, such as a rubber hose, which has a certain degree of flexibility and elasticity, allowing for easy adjustment of the suction position to meet the suction requirements of different veterinary drug raw materials.

[0024] The discharge pipe 4 is installed at the discharge end of the self-priming crusher 2, responsible for conveying the crushed material to the discharge hopper 5. The discharge pipe 4 also supports the discharge hopper 5; the discharge hopper 5 adopts a sealed design to prevent dust from overflowing during the discharge process and polluting the workshop environment. An exhaust hood 6 is installed at the upper end of the discharge hopper 5, and an exhaust bag 15 is installed inside the exhaust hood 6. The exhaust bag 15 uses high-efficiency filter material, such as polyester fiber filter media, which can effectively filter dust in the exhaust air, so that the emitted gas meets environmental protection requirements. A first motor 7 is installed at the upper end of the exhaust hood 6, and the first motor 7 drives the T-shaped pipe 16 located inside the exhaust bag 15 to rotate.

[0025] The T-shaped tube 16 installed at the output end of the first motor 7 rotates inside the exhaust bag 15, serving to agitate and guide the airflow. One end of the T-shaped tube 16 is connected to an air inlet pipe 18, which is positioned close to the exhaust bag 15 but does not abut against it, ensuring that the airflow can smoothly enter the air inlet pipe 18. Multiple air inlet holes 19 are evenly distributed around the circumference of the air inlet pipe 18, increasing the air intake area and improving air intake efficiency. Through the air inlet pipe 18 and the air inlet holes 19, a portion of the air inside the exhaust hood 6 is introduced into the return air system, achieving airflow recycling.

[0026] The other end of the T-shaped pipe 16 is connected to the mounting pipe 13, through which an inclined return air pipe 14 is installed. The diameter of the return air pipe 14 is smaller than that of the mounting pipe 13, and the end of the return air pipe 14 faces the self-priming pulverizer 2, allowing the return airflow to directly enter the pulverizer and form an internal airflow circulation. A valve can be installed on the return air pipe 14 to control the return air volume. An L-shaped pipe is rotatably connected to the lower end of the T-shaped pipe 16, and the L-shaped pipe is connected to the return air pipe 14 via a flexible hose. The flexible hose is made of wear-resistant and flexible rubber, capable of adapting to the rotational movement of the T-shaped pipe 16 and ensuring unobstructed return air passage.

[0027] The self-priming crusher 2 draws material from the feed hopper through the suction pipe 3 and the installation pipe 13, and crushes it through the high-speed rotating hammers inside the self-priming crusher 2. The crushed material then enters the discharge hopper 5. The wind generated by the self-priming crusher 2 during operation carries a large amount of material dust through the discharge pipe 14 into the exhaust bag 15 above the discharge hopper 5. The wind passes through the exhaust bag 15 and is discharged into the exhaust hood 6 and then into the outside. The dust falls into the discharge hopper 5.

[0028] When air and materials pass through the return air duct 14, the air velocity at the end of the return air duct 14 is high and the pressure is low, while the air velocity at the air inlet 19 on the air inlet duct 18 is low and the pressure is high, creating a pressure difference (Bernoulli's principle). In addition, the exhaust bag 15 is in a state of being supplied with air, and the pressure is higher than the external pressure. As a result, the air flows back into the installation pipe 13 through the air inlet 19, air inlet duct 18, T-shaped pipe 16, L-shaped pipe, hose 8 and return air duct 14. This can increase the air flow in the installation pipe 13 and better transport the veterinary drug raw materials.

[0029] Because the air inlet 19 is located close to the exhaust bag 15, a negative pressure is generated at the air inlet 19, which can clean the dust filtered on the inner wall of the exhaust bag 15 to a certain extent and return it to the self-priming pulverizer 2; it can increase the exhaust volume of the exhaust bag 15, ensure that the exhaust bag has a better ventilation effect, greatly reduce the air pressure in the exhaust bag 15, and make the self-priming pulverizer 2 work more efficiently.

[0030] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A self-priming pulverizer return air device for veterinary drug preparation, characterized in that, include: A support (1) and a self-priming crusher (2) mounted on the support (1), wherein the self-priming crusher (2) is equipped with a mounting pipe (13) at the suction end, and a suction pipe (3) is mounted on the mounting pipe (13). The discharge pipe (4) is installed at the discharge end of the self-priming crusher (2) and a discharge hopper (5) is installed on the discharge pipe (4). An exhaust hood (6) is installed at the upper end of the discharge hopper (5). An exhaust bag (15) is installed inside the exhaust hood (6). A first motor (7) is installed at the upper end of the exhaust hood (6). A T-shaped pipe (16) located inside the exhaust bag (15) is installed at the output end of the first motor (7). One end of the T-shaped pipe (16) is connected to an air inlet pipe (18). An air inlet hole (19) is provided through the air inlet pipe (18). The other end of the T-shaped pipe (16) is connected to the mounting pipe (13).

2. The air return device for a self-priming pulverizer used in veterinary drug preparation according to claim 1, characterized in that, in: The bracket (1) is equipped with a second motor (9), and the output end of the second motor (9) is fixed with a first sprocket (11). The self-priming crusher (2) is equipped with a second sprocket (10), and the first sprocket (11) and the second sprocket (10) are connected by a chain (12).

3. The air return device for a self-priming pulverizer used in veterinary drug preparation according to claim 1, characterized in that, in: An inclined return air duct (14) is installed through the mounting pipe (13). An L-shaped pipe is rotatably connected to the lower end of the T-shaped pipe (16). The L-shaped pipe is connected to the return air duct (14) through a flexible hose.

4. The air return device for a self-priming pulverizer used in veterinary drug preparation according to claim 1, characterized in that, in: The air intake pipe (18) is located close to the exhaust bag (15), and the air intake pipe (18) does not abut against the exhaust bag (15).

5. The air return device for a self-priming pulverizer used in veterinary drug preparation according to claim 1, characterized in that, in: The suction pipe (3) is connected to the installation pipe (13) through a threaded joint, and the suction pipe (3) is a flexible pipe.

6. The air return device for a self-priming pulverizer used in veterinary drug preparation according to claim 3, characterized in that, in: The diameter of the return air duct (14) is smaller than the diameter of the mounting pipe (13), and the port of the return air duct (14) is set towards the self-priming crusher (2).

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